After completion of the second leukapheresis, patients receive high-dose chemotherapy comprising cisplatin IV continuously over 24 hours on day -5, cyclophosphamide IV over 1 hour on days -5, -4, and -3, and carmustine IV over 2 hours on day -2. Patients undergo autologous bone marrow or PBSC transplantation on day 0. Patients receive G-CSF IV daily beginning on day 0 and continuing until blood counts recover.